Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 397, NWS Norman, OK

July 16, 2021Comanche County, Kiowa County, Tillman County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jul 16, 2021, 1:50 AM CDT for Comanche County, Kiowa County, Tillman County, Oklahoma. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 16, 2021, 1:50 AM CDT (06:50 UTC)
Expired: Jul 16, 2021, 2:14 AM CDT
In force: 24 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Comanche County, OK, Kiowa County, OK, Tillman County, OK

The radar

The Altus AFB radar (KFDR), 24 km from the middle of the area, began a volume at 06:50 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 6.8 hours before the alert went out and 167 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1131 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1305 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 197 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.6

Open this sounding in Storm Lab

The text

As transmitted.

070 
WUUS54 KOUN 160650
SVROUN
OKC031-075-141-160730-
/O.NEW.KOUN.SV.W.0397.210716T0650Z-210716T0730Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Norman OK
150 AM CDT Fri Jul 16 2021

The National Weather Service in Norman has issued a

* Severe Thunderstorm Warning for...
  West central Comanche County in southwestern Oklahoma...
  Southern Kiowa County in southwestern Oklahoma...
  Northwestern Tillman County in southwestern Oklahoma...

* Until 230 AM CDT.

* At 150 AM CDT, a severe thunderstorm was located near Manitou,
  moving east at 20 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* Locations impacted include...
  Tipton and Manitou. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3459 9914 3459 9913 3458 9913 3459 9912
      3459 9909 3461 9909 3468 9877 3440 9878
      3448 9916
TIME...MOT...LOC 0650Z 267DEG 19KT 3455 9903 

HAIL...1.50IN
WIND...60MPH
 
$$

Maxwell

2 follow-up statements

735 
WWUS54 KOUN 160707
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
207 AM CDT Fri Jul 16 2021

OKC031-075-141-160730-
/O.CON.KOUN.SV.W.0397.000000T0000Z-210716T0730Z/
Comanche OK-Kiowa OK-Tillman OK-
207 AM CDT Fri Jul 16 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 AM CDT
FOR WEST CENTRAL COMANCHE...SOUTH CENTRAL KIOWA AND NORTH CENTRAL
TILLMAN COUNTIES...

At 207 AM CDT, a severe thunderstorm was located 7 miles east of
Manitou, moving east at 30 mph.

HAZARD...60 mph wind gusts and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Manitou.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3460 9898 3464 9877 3440 9878 3445 9903
TIME...MOT...LOC 0707Z 273DEG 24KT 3453 9886 

HAIL...0.88IN
WIND...60MPH
 
$$

Maxwell

674 
WWUS54 KOUN 160714
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
214 AM CDT Fri Jul 16 2021

OKC031-075-141-160723-
/O.CAN.KOUN.SV.W.0397.000000T0000Z-210716T0730Z/
Comanche OK-Kiowa OK-Tillman OK-
214 AM CDT Fri Jul 16 2021

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL COMANCHE...SOUTH
CENTRAL KIOWA AND NORTH CENTRAL TILLMAN COUNTIES IS CANCELLED...
                 
The storm which prompted the warning has weakened below severe
limits, therefore the warning has been cancelled.  However gusty
winds and heavy rain are still possible with this thunderstorm.

LAT...LON 3460 9898 3464 9877 3440 9878 3445 9903
TIME...MOT...LOC 0709Z 267DEG 19KT 3453 9882 

$$

Maxwell

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 15, 7:15 PM CDT	Areal Flood Advisory	OUN	Ellis, Harper, Woodward	3 hr
Jul 16, 12:25 AM CDT	Special Weather Statement	OUN	Harmon	35 min
Jul 16, 12:36 AM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon, Jackson	39 min
Jul 16, 1:23 AM CDT	Special Weather Statement	OUN	Custer	37 min
Jul 16, 1:41 AM CDT	Special Weather Statement	OUN	Tillman	34 min
Jul 16, 2:00 AM CDT	Special Weather Statement	OUN	Washita	30 min
Jul 16, 2:04 AM CDT	Special Weather Statement	OUN	Dewey	26 min
Jul 16, 2:10 AM CDT	Special Weather Statement	OUN	Custer	35 min
Jul 16, 2:43 AM CDT	Special Weather Statement	OUN	Blaine	32 min
Jul 16, 2:51 AM CDT	Areal Flood Advisory	OUN	Comanche	3 hr
Jul 16, 3:37 AM CDT	Areal Flood Advisory	OUN	Caddo	3 hr
Jul 16, 5:10 AM CDT	Areal Flood Advisory	OUN	Oklahoma	3 hr
Jul 16, 6:06 PM CDT	Special Weather Statement	OUN	Love	24 min
Jul 16, 6:22 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Love, Marshall	38 min
Jul 16, 6:53 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Woods	16 min
Jul 16, 6:54 PM CDT	Special Weather Statement	OUN	Grant	36 min
Jul 16, 6:58 PM CDT	Special Weather Statement	OUN	Love	32 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2021 Every severe thunderstorm warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.